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Push and hold
to lock all keys and to protect current settings.
To unlock, push and hold
once again until the
indication
on the LCD disappears.
Your M P-50 Player is equipped with a menu key. This key is used
for the following functions:
Move the key to adjust the
volume.
Push the key to enter the
menu of the M P-50 Player.
Within the menu use this
same key to browse
through the menu.
Within the menu push this
same key to select the
function displayed.
The Menu Key
Keylock
